Windows Movie Maker--trying to make a claymation

I hope someone may be able to help me. My 6th grade students have put together a claymation movie using Windows Movie Maker. They are having trouble getting it to play properly. We adjusted the picture and transition durations to .125 to create the flow in the movie. When we get the project to play, it jumps over a bunch of pictures and doesn't look like a movie at all. I am not sure what we are doing wrong. I kind of need help b/c the students have to present their movies in about a week.
Thanks for any help you can give me.

at the bottom of movie maker click on storyline and change it to time line. stretch each segment or picture to a desired time length. i'm not exactly sure if this is what you're talking about. the animated video i made took for ever. it took a lot of saving and restarting then reapplying.